hi
i was one of many who lost a lot of mail due to this, on 10.15 original release.
running 10.15.1 now and i can say that i haven't lost any mail (i watch it all very closely now).
but i wouldn't even think for an instant to say the problems have been solved.
it was a disaster and won't be forgotten ever by people who experienced it.
i can now move mail from folder to folder and it won't get lost.
but it does take a long time to move mail (i mean a long time, like waiting for a spaceship to come from the back side of the moon before re-gaining communication long, before a mail does show up in the folder it was moved to- i have a lot of Mail Rules and i figure its taking a long time to run through them- but it now takes 5 or 6 seconds before it is showing up whereas before (Mojave) it was instantaneous).
